rust/compiler/rustc_codegen_cranelift/patches/bcryptprimitives.rs

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2024-03-09 12:42:26 -06:00
// Shim for bcryptprimitives.dll. The Wine version shipped with Ubuntu 22.04
// doesn't support it yet. Authored by @ChrisDenton
#![crate_type = "cdylib"]
#![allow(nonstandard_style)]
#[no_mangle]
pub unsafe extern "system" fn ProcessPrng(mut pbData: *mut u8, mut cbData: usize) -> i32 {
while cbData > 0 {
let size = core::cmp::min(cbData, u32::MAX as usize);
RtlGenRandom(pbData, size as u32);
cbData -= size;
pbData = pbData.add(size);
}
1
}
#[link(name = "advapi32")]
extern "system" {
#[link_name = "SystemFunction036"]
pub fn RtlGenRandom(RandomBuffer: *mut u8, RandomBufferLength: u32) -> u8;
}